This is with FSX sp2I've tried multiple ways to do this and keep coming up with the same issue. Could somebody quickly reproduce this so as I'm not doing this wrong.Go to KMIA and parking spot with the GE Model MD-11 FreighterGo to advanced weather in the FSX dialog and make the temp 23CNow in the FMC under TO/APPR type in flaps 25 with a flex of 48C and see if you get 65.8 or somewhere low like that for a TO Thrust.You can probably use any flightplanHere are the values I get for thrust at 23CFlex Thrust50 104.149 85.048 65.847 85.646 105.545 105.8Now if you do this at 15C TAT the values are correct but in the 20's the flex temps get out of whack.I know this probably will not be fixed if its a bug and I only have to disregard TOPCAT and bump up FLX 2 degrees but I want to make sure I'm doing this right.Sean Green

I did the same test at KMIA in FS9 with MD-11 freighter and had the same values. When I did the test at KIND at 23C the thrust values were correct again. Must be something about Miami that the MD-11 at 23C TAT doesn't like.Thanks to anybody who looks into it to verify.Sean Green

I did the same test at KMIA in FS9 with MD-11 freighter and had the same values. When I did the test at KIND at 23C the thrust values were correct again. Must be something about Miami that the MD-11 at 23C TAT doesn't like.Thanks to anybody who looks into it to verify.Sean Green

Thanks for this Sean, Very strange but it explains a very weird situation I had in Memphis last year using real world weather, I had two failed T/O runs with very low N1 settings and flex, on the third attemept I had to use TOGA thrust, never seen it again in thousands of flights, wish I had noted the ambiant conditions now. I will test this when I get home tonight.